Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/eduni/namespaces/1.0/038.xml
<?xml version="1.0"?> <!-- Attribute uniqueness: prefixed and unprefixed attributes with same local name --> <foo xmlns:a="http://example.org/~wilbur"> <bar a:attr="1" attr="2"/> </foo>